World stocks slipped on Monday ahead of a blizzard of earnings from the world's biggest firms and as wary investors watched U.S. bond yields approach peaks that have triggered market spasms in the past.

Traders were also getting a global round of economic surveys that should show in the coming days if economic softness in the first quarter was just a passing phase linked to wintery weather and the Lunar New Year holidays in Asia.

Toby Melville | Reuters

London Stock Exchange

Readings from Japan, France, and Germany were all relatively reassuring. Japan's PMI data firmed as output and domestic demand picked up, France got help from its services sector, while Germany came in above forecast despite weaker new orders numbers.

"It's a good reading, it's still encouraging," said Chris Williamson, chief business economist at IHS Markit, of the combined euro zone numbers, which he said pointed to quarterly GDP growth of 0.6 percent.

On the geopolitical front, there was plenty to digest too.

North Korea said on Saturday that it would immediately suspend nuclear and missile tests, scrap its nuclear test site and instead pursue peace and economic growth.

Talk of a trip by the U.S. Treasury Secretary Steven Mnuchin to China, also fueled hopes that the recent trade tensions between the world's two biggest economies may be thawing.

Brent crude oil futures were off 20 cents at $73.83 per barrel, U.S. crude eased to $68.16. Aluminum prices leapt up again, though, to add to this month's 25 percent surge following U.S. sanctions on Russia's producer-giant Rusal.

The 3 percent barrier

Of particular concern for U.S. analysts will be executives' views about their exposure to China, amid the recent worries about a trade war.

Treasury Secretary Mnuchin said on Saturday he might travel to Beijing, a move that could ease tensions between the two supersized economies.

"A trip is under consideration," Mnuchin said at a news conference during the International Monetary Fund and World Bank spring meetings in Washington.

"I did meet with the Chinese here. The discussions were really more around the governor's actions at the PBOC (People's Bank of China) and certain actions they've announced in terms of opening some of their markets, which we very much encourage and appreciate."

Back in commodity markets, the spike in oil has driven up both market expectations of future inflation and long-term bond yields.

Yields on 10-year Treasurys are at the highest now since early 2014 and again threatening the hugely important 3 percent bulwark.

The last time yields neared this number in 2013 it rocked risk appetite and sent stocks sliding. It also came shortly before oil prices went on a mighty 75 percent tumble.

"Another $5/barrel increase in oil will be enough for U.S. 10-year yields to threaten 3 percent. Oil is now at the cusp of levels where higher prices will spark greater FX and broader asset market volatility," said Deutsche Bank's macro strategist, Alan Ruskin.

Traditionally the dollar had a slight negative correlation with oil, mostly because the dominant causation goes from dollar weakness to rising oil prices, he added.

"If oil helps push the 10-year yield into new terrain for this cycle, this will play at least mildly USD positive in a change of correlation."